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Full-Text Articles in Physics

Developing Arduino Coding Curriculum, Tyler Brown, Riley Bucheitte, Timothy Kidd Jul 2020

Developing Arduino Coding Curriculum, Tyler Brown, Riley Bucheitte, Timothy Kidd

Summer Undergraduate Research Program (SURP)

No abstract provided.


Analyzing And Classifying Single Molecule Microscopy Data, Troy Buzynski, Ali Tabei Jul 2020

Analyzing And Classifying Single Molecule Microscopy Data, Troy Buzynski, Ali Tabei

Summer Undergraduate Research Program (SURP)

No abstract provided.


Modeling The Griffiths Phase In Manganese Intercalated Tantalum Disulfide [Poster], Aaron Janaszak, Lukas Stuelke, Paul Shand Jul 2020

Modeling The Griffiths Phase In Manganese Intercalated Tantalum Disulfide [Poster], Aaron Janaszak, Lukas Stuelke, Paul Shand

Summer Undergraduate Research Program (SURP)

No abstract provided.


Modeling Adsorption Of Molecular Semiconductors On An Ionic Substrate: Ptcda And Cupc On Nacl, Julia Thorpe May 2020

Modeling Adsorption Of Molecular Semiconductors On An Ionic Substrate: Ptcda And Cupc On Nacl, Julia Thorpe

Scholars Week

Molecular adsorption can be accurately studied using computational chemistry methods. Experimental results suggest that molecular geometry and energies can be influenced by the presence of thin film substrates as well as surrounding molecules. In our study, Density Functional Theory (DFT) and Molecular Mechanics (MM) are used to model the configurations of the organic semiconducting materials, Perylene Tetracarboxylic Dianhydride, C24H8O6 (PTCDA), and Copper Phthalocyanine, C34H16CuN8 (CuPc), as adsorbed on single and double layer NaCl substrates of various dimensions and charge settings. After geometry and charge optimization of the molecules using DFT, the molecular geometries are optimized under different environments using computational ...


Parameter Identifiability And Estimation In A 1d Cardiovascular Fluid Dynamics Model, Mitchel J. Colebank May 2020

Parameter Identifiability And Estimation In A 1d Cardiovascular Fluid Dynamics Model, Mitchel J. Colebank

Biology and Medicine Through Mathematics Conference

No abstract provided.


Emergence, Mechanics, And Development: How Behavior And Geometry Underlie Cowrie Seashell Form, Michael G. Levy, Michael R. Deweese May 2020

Emergence, Mechanics, And Development: How Behavior And Geometry Underlie Cowrie Seashell Form, Michael G. Levy, Michael R. Deweese

Biology and Medicine Through Mathematics Conference

No abstract provided.


Parameter Estimation For Tear Film Thinning, Rayanne Luke May 2020

Parameter Estimation For Tear Film Thinning, Rayanne Luke

Biology and Medicine Through Mathematics Conference

No abstract provided.


Coherent Captain Mills: The Search For Sterile Neutrinos, Ashley Elliott, Jeramy Gordon, Jonah Greenwood, Rachel Lake, Ryder Moreno, Emily Strawn, Kate Walker May 2020

Coherent Captain Mills: The Search For Sterile Neutrinos, Ashley Elliott, Jeramy Gordon, Jonah Greenwood, Rachel Lake, Ryder Moreno, Emily Strawn, Kate Walker

Discovery Day - Prescott

The observation of neutrino oscillations confirms that the active neutrinos (νe, νμ, ντ) are comprised of three mass eigenstates with Δm2 values between 10-3 to 10-5 eV2 . However, a persistent phenomenon has been observed at LSND, MiniBooNE and other shortbaseline experiments (SBE) where Δm2 ~ 1eV2 and is not compatible with the current mixing between mass eigenstates. However, a 4th neutrino, a sterile neutrino (νs) that doesn’t participate in weak interactions could explain the phenomena observed as SBE’s. An experiment has been constructed at TA-53 at Los Alamos National Laboratory to investigate this large Δm2 ~ 1eV2 and determine conclusively ...


Finding Strong Gravitational Lenses With Residual Neural Networks, Christopher Storfer, Andrew Pilon, Varun Ravi, Matthew Domingo May 2020

Finding Strong Gravitational Lenses With Residual Neural Networks, Christopher Storfer, Andrew Pilon, Varun Ravi, Matthew Domingo

Creative Activity and Research Day - CARD

Measuring gravitational lensing by galaxies is the only way to directly study the elusive dark matter. However, gravitational lensing is a very rare phenomenon (~1 in 10,000 galaxies). Our goal is to find new strong gravitational lenses using deep neural networks (“neural nets”). We train our neural nets on a hand-labeled set of images, consisting of both lenses and non-lenses (“the training sample”). We then apply the trained neural nets to a “validation set” to assess the accuracy and precision of its predictions. Given the rarity of lenses, we cannot tolerate a false positive rate higher than 0.1 ...


Analyzing Flash X-Ray Machine Diagnostics, Sebastian Bustillo, Asaph Camillo, Jake Morris May 2020

Analyzing Flash X-Ray Machine Diagnostics, Sebastian Bustillo, Asaph Camillo, Jake Morris

Scholars Day Conference

The Cygnus Dual Beam Radiographic Facility consists of two flash x-ray machines, Cygnus 1 and 2. The seamless performance of these machines is critical to the maintenance of the United States stockpile of nuclear weapons. Since these SubCritical experiments cost about $104 million when something malfunctions millions of dollars are lost. As a result, it is imperative to assess the performance of the machine from diagnostics collected by the different sensors. Its performance is measured by the level of radiation dose a shot obtains. Utilizing exploratory data analysis, interesting trends were found and a 74.1% level of correctness was ...


Mapping And Simulating Standing Wave Patterns In A Microwave Oven, Sana Ahmed Apr 2020

Mapping And Simulating Standing Wave Patterns In A Microwave Oven, Sana Ahmed

Senior Scholars Day

The goal of our project was to map the standing wave patterns in a microwave oven cavity using experimentation. The next task was then to view the standing wave patterns utilizing computer simulations. In a related project done by one of the group members, a microwave oven was used to find the speed of light. He placed chocolate into the microwave cavity, let the chocolate melt at the antinodes of the standing waves. He then measured the distance between the melted spots, multiplied the distance by the frequency of the microwave and found the speed of light. However, while finding ...


396— Radioactive Decay Calibrations Of Rics Using 41 Ar, Emily Vanderbilt, Nicole Gindling Apr 2020

396— Radioactive Decay Calibrations Of Rics Using 41 Ar, Emily Vanderbilt, Nicole Gindling

GREAT Day

The short-lived isotope-counting system (SLIC) being built for the OMEGA laser facility at LLE requires gaseous radioisotopes for calibration purposes. Using a Plutonium-Beryllium (Pu-Be) source at SUNY Geneseo, 41Ar was made by capturing thermal neutrons via the 40Ar(n,gamma) reaction. Once activated, 41Ar beta decays, producing an electron with endpoint energy of 1.198 MeV. The daughter product is found to be the second excited state of 41K 99.1% of the time. This decays to the ground state and emits a 1.293 MeV gamma ray. To accurately measure the beta activity of 41Ar, the Gamma-X system at ...


240— Target Characterization Using Rutherford Backscattering Spectroscopy, Matthew G. Klein, Anthony C. Cooper, Jovahn A. Roumell Apr 2020

240— Target Characterization Using Rutherford Backscattering Spectroscopy, Matthew G. Klein, Anthony C. Cooper, Jovahn A. Roumell

GREAT Day

Rutherford backscattering spectroscopy (RBS) is a non-destructive ion-beam analytical technique that is used to determine properties of a target such as thickness, areal density, and elemental composition. This scattering is the result of Coulomb forces between the target atoms and the incident particle. The energy spectrum of the scattered ions depends on the atomic number of the target atoms as well as the target thickness.


293— Moly - Monitoring Oxygen Levels In Ntof Scintillators Using Cosmic Ray Muons, Sean King, Matthew Signor Apr 2020

293— Moly - Monitoring Oxygen Levels In Ntof Scintillators Using Cosmic Ray Muons, Sean King, Matthew Signor

GREAT Day

High Energy Density Physics and Inertial Confinement Fusion facilities employ nTOF methods to measure neutron energies. Laser induced fusion facilities use the beam pulse as a start signal and Xylene scintillators as the stop signal to obtain the time of flight. To improve timing performance, the scintillator liquid is quenched with oxygen reducing the light production. However, oxygen reacts with the scintillator liquid causing the detector photo flash decay time to increase that reduces the energy resolution of the detector. An in-situ monitoring system which uses cosmic ray muons to determine the oxygen concentration, is being developed at SUNY Geneseo ...


297— Modeling Optical Extinction Spectra Of Polystyrene Beads In Water, Justin D'Souza Apr 2020

297— Modeling Optical Extinction Spectra Of Polystyrene Beads In Water, Justin D'Souza

GREAT Day

To model the global climate, it is critical to understand how light interacts with particles in the atmosphere. Extinction spectra have been measured and simulated for a model system consisting of polystyrene beads in water. These beads have sizes comparable to atmospheric aerosols and can be dyed to mimic the properties of soot. Once the simulation is validated by comparing optimized simulation parameters to nominal particle properties, it can be used to study soot aerosols. We show that our simulation program can return reasonable values for the size and optical properties of this model system.


285— Modifications Of Cosmic Watch Muon Detectors For Deployment At Letchworth State Park, Kevin Seitz Apr 2020

285— Modifications Of Cosmic Watch Muon Detectors For Deployment At Letchworth State Park, Kevin Seitz

GREAT Day

For an American Physical Society funded physics outreach project, fifteen Cosmic Watch cosmic ray muon detectors, designed at MIT, are being assembled by students at Geneseo. Over the summer of 2020, ten detectors will be deployed around Letchworth State Park to educate park visitors about cosmic rays. The muon detection rate and cumulative count are displayed on a small OLED screen, with an LED flashing every time a muon passes through the detector’s scintillator. Each incidence is also logged to a micro SD card. Customized open-source software was used to allow the OLED and SD card to work simultaneously ...


Physics 223 Poster: Statistical Mechanics And Dice, Isaac Both Apr 2020

Physics 223 Poster: Statistical Mechanics And Dice, Isaac Both

Student Showcase for Research and Creative Inquiry

In this lab, we will seek to demonstrate the Second Law of Thermodynamics by performing a series of dice experiments showing the tendency towards disorder and its correlation to probabilities.


Physics 223 Poster: Hubble Law, Andrew Burghaus Apr 2020

Physics 223 Poster: Hubble Law, Andrew Burghaus

Student Showcase for Research and Creative Inquiry

The Objective of this experiment was to determine The Hubble constant.1 The Hubble constant is a ratio of the recessional velocity of distant galaxies to the distance that galaxy is from the Milky way. The constant can then be used to calculate the age of the universe. Doing this will allow us to compare our results with a more accepted quantity.


Physics 223 Poster: Hubble Law, William Coleman Apr 2020

Physics 223 Poster: Hubble Law, William Coleman

Student Showcase for Research and Creative Inquiry

The objective of this experiment was to calculate the age of the universe. This was done by using provided astronomical data to calculate an experimental Hubble’s constant to which Hubble’s law was applied.


Physics 223 Poster: Hubble Law, Rayshad Lindsay Apr 2020

Physics 223 Poster: Hubble Law, Rayshad Lindsay

Student Showcase for Research and Creative Inquiry

In the work is to determine the value for Hubble’s constant based on observing images and spectra of various spiral galaxies and determining the age of the universe.


Physics 223 Poster: Statistical Mechanics And Dice, Ibrahim Maday Apr 2020

Physics 223 Poster: Statistical Mechanics And Dice, Ibrahim Maday

Student Showcase for Research and Creative Inquiry

In this experiment we will •explore the realm of statistical mechanics by rolling dice. •calculate the multiplicity and entropy of varying dice rolls. •determine the type of distribution pattern that it follows.


Physics 223 Poster: Hubble Law, Nick Zebhideh Apr 2020

Physics 223 Poster: Hubble Law, Nick Zebhideh

Student Showcase for Research and Creative Inquiry

The purpose of this experiment was to calculate an experimental Hubble constant value and use that value to calculate an estimated age of the universe using data drawn from the Hubble Law Lab from the University of Washington. Both experimental values were then compared to the most recent accepted values respectively.


Physics 223 Poster: Hubble Law, James Cox Apr 2020

Physics 223 Poster: Hubble Law, James Cox

Student Showcase for Research and Creative Inquiry

Hubble’s Law relates the distance and velocity of receding galaxies using a constant known as the Hubble Constant. This lab activity calculated the Hubble Constant and approximated the age of the universe using publicly available data, using Edwin Hubble’s original principles.


Physics 223: Statistical Mechanics And Dice, Connor Rosenberry Apr 2020

Physics 223: Statistical Mechanics And Dice, Connor Rosenberry

Student Showcase for Research and Creative Inquiry

In this experiment, we will study the properties of entropy, multiplicity and probability using dice. We will roll 4 & 8 sided dice together and 4, 6, and 8 sided dice together for many trials and we will record the sum of the dice for each roll. We will then calculate each possible outcome’s expected multiplicity and probability of occurring. We can also predict each outcome’s expected entropy and compare these expected values of multiplicity and entropy to their actual values we found in this experiment. In doing so, we will be able to see the natural tendency of ...


Physics 223 Poster: Hubble Law, Rebecca Alvarez Apr 2020

Physics 223 Poster: Hubble Law, Rebecca Alvarez

Student Showcase for Research and Creative Inquiry

In this experiment, we analyzed the images and spectra of multiple galaxies and found the velocity and distance from Earth of each galaxy. Plotting the velocity against distance, we found a value for the Hubble constant using the slope of the trendline. This value was used to compute the age of the universe. Both the Hubble constant and the age of the universe were compared to the currently accepted values for consistency.


Spin-Glass Ordering In The Diluted Magnetic Semiconductor Zn1-Xmnxte, S. Barrett, T. M. Pekarek Apr 2020

Spin-Glass Ordering In The Diluted Magnetic Semiconductor Zn1-Xmnxte, S. Barrett, T. M. Pekarek

Showcase of Osprey Advancements in Research and Scholarship (SOARS)

Magnetic measurements on the spin-glass behavior in the bulk II-VI diluted magnetic semiconductor (DMS) ZnMnTe were made on two crystals of concentrations x = 0.43 and 0.55 taken from the same boule. Magnetization and density functional theory studies have shown paramagnetic behavior in both samples between 30 and 400 K. Below 30 K, there is a prominent peak at Tc = 15 and 23.6 K for concentrations x = 0.43 and 0.55, respectively. The splitting of the field cooled (FC) and zero field cooled (ZFC) data below this peak is indicative of a transition to a spin-glass state ...


Understanding The Magnetic Interactions Of The Zig-Zag Honeycomb Lattice: Application To Rucl3, Evan Wilson, Jason T. Haraldsen Apr 2020

Understanding The Magnetic Interactions Of The Zig-Zag Honeycomb Lattice: Application To Rucl3, Evan Wilson, Jason T. Haraldsen

Showcase of Osprey Advancements in Research and Scholarship (SOARS)

The new field of Dirac quantum matter has produced a lot of interesting theories and materials, especially in the dynamics of magnetic materials. One such material is RuCl3, which is a S = 1/2 zigzag honeycomb lattice. Through inelastic neutron scattering, this material has demonstrated spin waves with an energy scale of 1.5-8.0 meV. According to literature, RuCl3 may be the realization of a new theoretical phase of matter called a spin liquid. This materials seems to fit the profile and has been investigated using a Kitaev model. In this study, we re-examine the data for RuCl3 using ...


Understanding The Spin-Glass State Through The Magnetic Properties Of Mn-Doped Znte, A. Alcantara, S. Barrett, D. Matev, I. Miotkowski, A. K. Ramdas, T. Pekarek, J. T. Haraldsen Apr 2020

Understanding The Spin-Glass State Through The Magnetic Properties Of Mn-Doped Znte, A. Alcantara, S. Barrett, D. Matev, I. Miotkowski, A. K. Ramdas, T. Pekarek, J. T. Haraldsen

Showcase of Osprey Advancements in Research and Scholarship (SOARS)

Magnetic measurements on the spin-glass behavior in the bulk II-VI diluted magnetic semiconductor (DMS) ZnMnTe were made on two crystals of concentrations x = 0.43 and 0.55 taken from the same boule. Magnetization and density functional theory studies have shown paramagnetic behavior in both samples between 30 and 400 K. Below 30 K, there is a prominent peak at Tc = 15 and 23.6 K for concentrations x = 0.43 and 0.55, respectively. The splitting of the field cooled (FC) and zero field cooled (ZFC) data below this peak is indicative of a transition to a spin-glass state ...


Reduced Dimensionality Effects In Ferromagnetic Behavior In La1-Xsrxmno3, C. A. Brennan, M. P. Warusawithana, J. Payne, D. Brown, T. M. Pekarek Apr 2020

Reduced Dimensionality Effects In Ferromagnetic Behavior In La1-Xsrxmno3, C. A. Brennan, M. P. Warusawithana, J. Payne, D. Brown, T. M. Pekarek

Showcase of Osprey Advancements in Research and Scholarship (SOARS)

We study the magnetic properties of La1-xSrxMnO3 samples for concentrations x, 0 ≤ x ≤ 0.5. An analysis is done to accurately determine the transition temperature or critical temperature. Magnetic phase diagrams showing the various concentrations at different temperatures will be determined for our thin films. Using the phase diagrams for both bulk and thin film materials can show how reducing the dimensionality from the third dimension to approaching the second-dimension affects the phase diagram.


Investigation Of The Obscure Spin State Of Ti-Doped Cdse, J. Dimuna, T. Boyett, I. Miotkowski, A. K. Ramdas, T. Pekarek, J. T. Haraldsen Apr 2020

Investigation Of The Obscure Spin State Of Ti-Doped Cdse, J. Dimuna, T. Boyett, I. Miotkowski, A. K. Ramdas, T. Pekarek, J. T. Haraldsen

Showcase of Osprey Advancements in Research and Scholarship (SOARS)

Using computational and experimental techniques, we examine the nature of the 2+ oxidation of Ti-doped CdSe. Through stoichiometry and confirmed through magnetization measurements, the weakly-doped material of Cd1-xTixSe (x = 0.0043) shows the presence of a robust spin-1 magnetic state of Ti, which is indicative of a 2+ oxidation state. Given the obscure nature of the Ti2+ state, we investigate the electronic and magnetic states using density functional theory. Using a generalized gradient approximation with an onsite potential, we determine the electronic structure, magnetic moment density, and optical properties for a supercell of CdSe with an ultra-low concentration of Ti ...